<!DOCTYPE html>

<html>

<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>一款震撼的图片展示的效果</title>
    <style type="text/css">
        html {
            overflow: hidden;
        }

        body {
            position: absolute;
            margin: 0px;
            padding: 0px;
            background: #f3f3f4;
            width: 100%;
            height: 100%;
        }

        #screen {
            position: absolute;
            left: 10%;
            top: 10%;
            width: 80%;
            height: 80%;
            background: #f3f3f4;
        }

        #screen img {
            position: absolute;
            cursor: pointer;
            visibility: hidden;
            width: 0px;
            height: 0px;
        }

        #screen .tvover {
            border: solid #876;
            opacity: 1;
            filter: alpha(opacity=100);
        }

        #screen .tvout {
            border: solid #fff;
            opacity: 0.9;
        }

        #bankImages {
            display: none;
        }
    </style>
    <script type="text/javascript">var Library = {};
        Library.ease = function () {
            this.target = 0;
            this.position = 0;
            this.move = function (target, speed) {
                this.position += (target - this.position) * speed;
            }
        }
        var tv = {
            /* ==== variables ==== */
            O: [],
            screen: {},
            grid: {
                size: 4, // 4x4 grid
                borderSize: 6, // borders size
                zoomed: false
            },
            angle: {
                x: new Library.ease(),
                y: new Library.ease()
            },
            camera: {
                x: new Library.ease(),
                y: new Library.ease(),
                zoom: new Library.ease(),
                focalLength: 750 // camera Focal Length

            },

            /* ==== init script ==== */

            init: function () {

                this.screen.obj = document.getElementById('screen');

                var img = document.getElementById('bankImages').getElementsByTagName('img');

                this.screen.obj.onselectstart = function () {
                    return false;
                }

                this.screen.obj.ondrag = function () {
                    return false;
                }

                /* ==== create images grid ==== */

                var ni = 0;

                var n = (tv.grid.size / 2) - .5;

                for (var y = -n; y <= n; y++) {

                    for (var x = -n; x <= n; x++) {

                        /* ==== create HTML image element ==== */

                        var o = document.createElement('img');

                        var i = img[(ni++) % img.length];

                        o.className = 'tvout';

                        o.src = i.src;

                        tv.screen.obj.appendChild(o);

                        /* ==== 3D coordinates ==== */

                        o.point3D = {

                            x: x,

                            y: y,

                            z: new Library.ease()

                        };

                        /* ==== push object ==== */

                        o.point2D = {};

                        o.ratioImage = 1;

                        tv.O.push(o);

                        /* ==== on mouse over event ==== */

                        o.onmouseover = function () {

                            if (!tv.grid.zoomed) {

                                if (tv.o) {

                                    /* ==== mouse out ==== */

                                    tv.o.point3D.z.target = 0;

                                    tv.o.className = 'tvout';

                                }

                                /* ==== mouse over ==== */

                                this.className = 'tvover';
                                this.point3D.z.target = -.5;
                                tv.o = this;
                            }
                        }
                        /* ==== on click event ==== */
                        o.onclick = function () {
                            if (!tv.grid.zoomed) {
                                /* ==== zoom in ==== */
                                tv.camera.x.target = this.point3D.x;
                                tv.camera.y.target = this.point3D.y;
                                tv.camera.zoom.target = tv.screen.w * 0.7;
                                tv.grid.zoomed = this;

                            } else {

                                if (this == tv.grid.zoomed) {

                                    /* ==== zoom out ==== */

                                    tv.camera.x.target = 0;

                                    tv.camera.y.target = 0;

                                    tv.camera.zoom.target = tv.screen.w / (tv.grid.size + .1);

                                    tv.grid.zoomed = false;

                                }

                            }

                        }

                        /* ==== 3D transform function ==== */

                        o.calc = function () {

                            /* ==== ease mouseover ==== */

                            this.point3D.z.move(this.point3D.z.target, .5);

                            /* ==== assign 3D coords ==== */

                            var x = (this.point3D.x - tv.camera.x.position) * tv.camera.zoom.position;

                            var y = (this.point3D.y - tv.camera.y.position) * tv.camera.zoom.position;

                            var z = this.point3D.z.position * tv.camera.zoom.position;

                            /* ==== perform rotations ==== */

                            var xy = tv.angle.cx * y - tv.angle.sx * z;

                            var xz = tv.angle.sx * y + tv.angle.cx * z;

                            var yz = tv.angle.cy * xz - tv.angle.sy * x;

                            var yx = tv.angle.sy * xz + tv.angle.cy * x;

                            /* ==== 2D transformation ==== */

                            this.point2D.scale = tv.camera.focalLength / (tv.camera.focalLength + yz);

                            this.point2D.x = yx * this.point2D.scale;

                            this.point2D.y = xy * this.point2D.scale;

                            this.point2D.w = Math.round(

                                Math.max(

                                    0,

                                    this.point2D.scale * tv.camera.zoom.position * .8

                                )

                            );

                            /* ==== image size ratio ==== */

                            if (this.ratioImage > 1)

                                this.point2D.h = Math.round(this.point2D.w / this.ratioImage);

                            else {

                                this.point2D.h = this.point2D.w;

                                this.point2D.w = Math.round(this.point2D.h * this.ratioImage);

                            }

                        }

                        /* ==== rendering ==== */

                        o.draw = function () {

                            if (this.complete) {

                                /* ==== paranoid image load ==== */

                                if (!this.loaded) {

                                    if (!this.img) {

                                        /* ==== create internal image ==== */

                                        this.img = new Image();

                                        this.img.src = this.src;

                                    }

                                    if (this.img.complete) {

                                        /* ==== get width / height ratio ==== */

                                        this.style.visibility = 'visible';

                                        this.ratioImage = this.img.width / this.img.height;

                                        this.loaded = true;

                                        this.img = false;

                                    }

                                }

                                /* ==== HTML rendering ==== */

                                this.style.left = Math.round(

                                    this.point2D.x * this.point2D.scale +

                                    tv.screen.w - this.point2D.w * .5

                                ) + 'px';

                                this.style.top = Math.round(

                                    this.point2D.y * this.point2D.scale +

                                    tv.screen.h - this.point2D.h * .5

                                ) + 'px';

                                this.style.width = this.point2D.w + 'px';

                                this.style.height = this.point2D.h + 'px';

                                this.style.borderWidth = Math.round(

                                    Math.max(

                                        this.point2D.w,

                                        this.point2D.h

                                    ) * tv.grid.borderSize * .01

                                ) + 'px';

                                this.style.zIndex = Math.floor(this.point2D.scale * 100);

                            }

                        }

                    }

                }

                /* ==== start script ==== */

                tv.resize();

                mouse.y = tv.screen.y + tv.screen.h;

                mouse.x = tv.screen.x + tv.screen.w;

                tv.run();

            },

            /* ==== resize window ==== */

            resize: function () {

                var o = tv.screen.obj;

                tv.screen.w = o.offsetWidth / 2;

                tv.screen.h = o.offsetHeight / 2;

                tv.camera.zoom.target = tv.screen.w / (tv.grid.size + .1);

                for (tv.screen.x = 0, tv.screen.y = 0; o != null; o = o.offsetParent) {

                    tv.screen.x += o.offsetLeft;

                    tv.screen.y += o.offsetTop;

                }

            },

            /* ==== main loop ==== */

            run: function () {

                /* ==== motion ease ==== */

                tv.angle.x.move(-(mouse.y - tv.screen.h - tv.screen.y) * .0025, .1);

                tv.angle.y.move((mouse.x - tv.screen.w - tv.screen.x) * .0025, .1);

                tv.camera.x.move(tv.camera.x.target, tv.grid.zoomed ? .25 : .025);

                tv.camera.y.move(tv.camera.y.target, tv.grid.zoomed ? .25 : .025);

                tv.camera.zoom.move(tv.camera.zoom.target, .05);

                /* ==== angles sin and cos ==== */

                tv.angle.cx = Math.cos(tv.angle.x.position);

                tv.angle.sx = Math.sin(tv.angle.x.position);

                tv.angle.cy = Math.cos(tv.angle.y.position);

                tv.angle.sy = Math.sin(tv.angle.y.position);

                /* ==== loop through all images ==== */

                for (var i = 0, o; o = tv.O[i]; i++) {

                    o.calc();

                    o.draw();

                }

                /* ==== loop ==== */

                setTimeout(tv.run, 32);

            }

        }

        /* ==== global mouse position ==== */

        var mouse = {

            x: 0,

            y: 0

        }

        document.onmousemove = function (e) {

            if (window.event) e = window.event;

            mouse.x = e.clientX;

            mouse.y = e.clientY;

            return false;

        }</script>

</head>



<body>
    <div id="screen"></div>
    <div id="bankImages">


    </div>
    <script src="./js/jquery.js"></script>
    <script type="text/javascript">/* ==== start script ==== */
        $(function () {
            $.ajax({
                type: "POST",
                url: "http://localhost:5656/getimages",

            }).then(function (res) {
                var rimg = JSON.parse(res);
                for (var i = 0; i < rimg.length; i++) {
                    if (rimg[i].u_class === 1) {
                        var str = `<img alt="" src="img/bgimg/${rimg[i].u_path}">`
                        $("#bankImages").html($("#bankImages").html() + str);
                    }

                }
                onresize = tv.resize;
                tv.init();
            })

        })
    </script>

</body>

</html>